Flashing light from MM3 Tuner

[mr.travo]

My tuner no longer displays anything and is flashing two red lights, 1 green, and then 2 more reds. Any ideas?

Thank you.

 0 Comment(s)

[AK Bob]

My tuner no longer displays anything and is flashing two red lights, 1 green, and then 2 more reds. Any ideas?

Thank you.

Normally a sign of a bad SD card.
Please keep us posted.
Tuner Error Messages
https://r.tapatalk.com/shareLink/top...ink_source=app


2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, 50 Gallon auxiliary fuel tank.

Sent from my iPhone using Tapatalk

 0 Comment(s)

[mr.travo]

I got it to fire up by removing the card and putting it back in.

Now my new problem is the unit won't turn on unless I touch the screen but then it doesn't read any of the sensors. It's acting as if it's not talking to the ECM? If I unplug it from the OBD2 and plug it back in, everything will work correctly but only for that one time. If I want everything to work properly again, I have to unplug/replug in the OBD2 connection.

Any ideas? I am looking all over Google....

Thanks

 0 Comment(s)

[AK Bob]

I got it to fire up by removing the card and putting it back in.

Now my new problem is the unit won't turn on unless I touch the screen but then it doesn't read any of the sensors. It's acting as if it's not talking to the ECM? If I unplug it from the OBD2 and plug it back in, everything will work correctly but only for that one time. If I want everything to work properly again, I have to unplug/replug in the OBD2 connection.

Any ideas? I am looking all over Google....

Thanks

Did you check all the connections?


2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, 50 Gallon auxiliary fuel tank.

Sent from my iPhone using Tapatalk

 0 Comment(s)

[CzechRooster]

I've had this exact problem.

Make sure the programming connector under the hood (3pin), is connected.

It's the one going to the ECM.

Sent from my SM-N960U using Tapatalk

 0 Comment(s)

[CzechRooster]

It may also have a bad connection at the black box of you programmer.

Sent from my SM-N960U using Tapatalk

 0 Comment(s)

[mr.travo]

I've had this exact problem.

Make sure the programming connector under the hood (3pin), is connected.

It's the one going to the ECM.

Sent from my SM-N960U using Tapatalk

You Sir win the stuffed bunny!

Damn!

Thank you so much.

I don’t know how in the heck it had unplugged itself but if it happens again, I can foresee some electrical tape coming to the rescue!

Thank you again guys!

 0 Comment(s)

[BlackBart]

You Sir win the stuffed bunny!

Damn!

Thank you so much.

I don’t know how in the heck it had unplugged itself but if it happens again, I can foresee some electrical tape coming to the rescue!

Thank you again guys!

Oh good gawd....

I'm havin the same problem... and I’ma kick myself in the *** if this is all that dunnit.

 0 Comment(s)

[DIESELWRKS]

Cummin's makes a lot of rumble and vibrations and push in connectors do vibrate loose.

I had same issues with the connectors on my MM3.

I tried zip ties but they looked like crap.

I found some stretchy type straps that have Velcro /hook and loop on opposing end sides.

The straps give a 1/3 ability to stretch and secure. I was able to get a pack for a good price. I have them now around the Comm unit under dash, also used them for the OBD port connection.

If i didn't find this on Amazon I was going to use the sports tape you put on your body.

You can cut it and its really strong when applied to its self and doesn't leave any residual sticky.

 0 Comment(s)